Add RGB565 Texture readback support in gl_helper

content/browser/android/content_view_core_impl.cc

Index: content/browser/android/content_view_core_impl.cc
diff --git a/content/browser/android/content_view_core_impl.cc b/content/browser/android/content_view_core_impl.cc
index c612941aedad75a28fdfe369f220d85c98b91e32..c9f8d819ea78ee77773b8a6e411404c1bc089d41 100644
--- a/content/browser/android/content_view_core_impl.cc
+++ b/content/browser/android/content_view_core_impl.cc
@@ -176,7 +176,8 @@ ContentViewCoreImpl::ContentViewCoreImpl(JNIEnv* env, jobject obj,
       view_android_(view_android),
       window_android_(window_android),
       device_orientation_(0),
-      geolocation_needs_pause_(false) {
+      geolocation_needs_pause_(false),
+      bitmap_config_is_565_(false) {
   CHECK(web_contents) <<
       "A ContentViewCoreImpl should be created with a valid WebContents.";
 
@@ -1287,7 +1288,6 @@ jboolean ContentViewCoreImpl::PopulateBitmapFromCompositor(JNIEnv* env,
   RenderWidgetHostViewAndroid* view = GetRenderWidgetHostViewAndroid();
   if (!view)
     return false;
-
   return view->PopulateBitmapWithContents(jbitmap);
 }
 
@@ -1634,6 +1634,30 @@ void ContentViewCoreImpl::SendOrientationChangeEventInternal() {
   rvhi->SendOrientationChangeEvent(device_orientation_);
 }
 
+static void recieveOutputBitmap(bool, const SkBitmap& bitmap)
+{
+  if(bitmap.isNull()){
+    return;
+  }
+}
+
+void ContentViewCoreImpl::PopulateBitmapAsync(gfx::Rect src_subrect,
+                                              gfx::Size dst_size,
+                                              bool readback_config_rgb565) {
+  RenderWidgetHostViewAndroid* view = GetRenderWidgetHostViewAndroid();
+  if (!view)
+    return ;
+  bitmap_config_is_565_ = readback_config_rgb565;
+  view->CopyFromCompositingSurface(src_subrect,
+        dst_size,
+        base::Bind(&recieveOutputBitmap));
+  bitmap_config_is_565_ = false;
+}
+
+bool ContentViewCoreImpl::IsReadBackConfig565()
+{
+  return bitmap_config_is_565_;
+}
 // This is called for each ContentView.
 jlong Init(JNIEnv* env, jobject obj,
            jboolean hardware_accelerated,